html,
body {
  height: 100%;
  width: 100%;
  margin: 0;
}

body {
  background: #fafafa;
  color: #333333;
  display: flex;
}

main {
  margin: auto;
}

.content-section {
  background: #ffffff;
  padding: 10px 20px;
  border: 1px solid #dddddd;
  border-radius: 3px;
  margin-bottom: 20px;
}